Keeprite NG furnace code "fail to ignite"

Hey all wife went to turn NG furnace on, no go. Led flashes code "fail to ignite/flame sense lost while running"
Pulled both panels off and can see igniter heat up BUT is it hot enough?
I would assume it is similar to our NG oven/stove that igniter has to get to a certain temp before the gas valve opens?
I'm thinking it's either igniter not hot enuf or gas control valve (Honeywell)
Keeprite 2stage hi-eff.
Thanks
Steve